Digital(optical) Line in Problem

Hi guys, I am sending an audio feed to my digital optical input port on my Dual 2.7 G5 and am not able to monitor the feed through my internal speaker or my firewire based audio output device. Am I missing a setting somewhere?
p.s. - I can see it is receiving audio in the audio preference pane, so the problem is most likely somewhere in the software.
THANKS!

I can confirm that Garageband can't seem to monitor the signal either.

Similar Messages

Recording Digital Audio via Optical Line-in

Hi,
I've been trying for the past hour to record Digital Audio from my XBOX 360 via an Optical Cable, into my MacPro's Optical line-in.
However all I get it huge amounts of noise / static / clicking all of the time.
Any ideas?
Thanks,

I suspect the audio from your XBOX is encoded in surround sound. The Mac will not decode this type of audio directly from the optical in port. You may need to try and change your XBOX preferences to standard stereo.

How to enable Surround Sound via Optical line?

Hi, I have been having problems outputting Dolby Digital 5.1 from my Mac to my Panasonic Home Theatre Reciever, When I insert the Optical line with the adaptor, It only gives me the option to send Stereo channels. No options for 5.1/6.1/7.1(Rear/Center)
However, I can use Dolby Pro Logic as another way of Dolby Digital. But I wanted to get actual Dolby Digital 5.1 Surround sound. I don't want to use more space on my MacBook Pro's HDD. Just to encode another movie/TV episode. (a.k.a Family Guy)
Is there a way I can install AC3 on my MBP?
I would appreciate everyone's help!

I Found out the problem. When I was hooking everything up, I kept the t.v. on so I can assign audio inputs with the onscreen display. If the T.V. is left on....only stereo outputted. When I turned the t.v. off and with the airport express plugged into AUX, I was able to switch between surround sound settings.
so the moral of the story is, turn off video devices when you just want sound, especially if they are hooked up to the AVR with HDMI.

How to connect Digital Optical Audio output iMac with Receiver Input

I have connected iMac with onkyo hts-3300 home theater system receiver through optical audio TosLink Cable.( http://www.amazon.com/Digital-Optical-Audio-TosLink-Cable/dp/B001ZU3G2I/ref=sr12?ie=UTF8&qid=1292865309&sr=8-2 ). Unfortunately there is no sound coming out from the Home theater system. I have verified the Receiver optical input is working fine by connecting with my TV optical audio digital out put and the it's working great. The only difference between TV and iMac is, on my TV, it has optical audio digital output and I can use this cable (http://www.amazon.com/Tripp-Lite-A102-02M-Digital-connectors/dp/B0002WPREU/ref=s r11?s=electronics&ie=UTF8&qid=1297320792&sr=1-1) to make it work. I can also verified my optical audio TosLink Cable working because I can see the red light coming out from the cable. So the only problem could be from iMac. I doubt I need to change the additional setting to configure iMac to use external optical audio setting instead of the buit in audio setting. Hoe can I able to do it? or my iMac(IMAC 21.5"/3.06/2X2GB/500GB/9400M-ITP
MB950ZP/A) doesn't support optical digital audio out put? I have follow this thread http://discussions.apple.com/thread.jspa?messageID=12769423&#12769423 and to my surprise which doesn't work out for me. I doubt that i need to change some setting, but when I got to setting>> sound I cannot change any setting. I was quite depressed aldy. Can someone answer my question as i m a newbie here. Thanks a lot

Thank you very much for your reply.
@Király : May i know how to Open Audio Midi Setup? Is this Audio Midi Setup is in the locatated in the Setting in Mac Snow Leapord OS? or how to locate this "Audio Midi Setup " in Mac enviroment. Is it possible to open this Audio Midi Setup in windows 7 enviroment also? I Just want to get the audio from my iMac in Hts-3300 onkyo home theatre. YOur help is much appreciated
@rkaufmann87 : Thank you very much for your sharing about this http://www.apple.com/airportexpress/ connection. for me what i understand is the digital audio output in airportexpress is the same as the audio out put in iMac in terms of details sepcs. So this airportexpress will only help you connect wirelessly to home theatre system, rather than waired connection. Other than that nothig much difference. So there is no point for me to spend extra bucks to attain the wireless connection. Unless the airportexpress have optical digital input, which i believe not. Correct me if I m worng, thanks

How to acquire serial data on a digital input line with good performance?

Hello,
we have a performance problem with our realtime controller. Our objective is, to read a 24-bit long digital waveform from a digital input line. To do this, we supply a clock signal (236 KHz) to the PFI1 Line of our DAQ Board. On each rising edge of the clock, a new bit is set on the digital input DI0.
Our hardware which transmits the data, is triggered through a digital output from our realtime controller. On each edge on this output, the hardware starts a serial transmission of 24-Bits.
Everything works fine except the bad performance of our realtime controller. We want to acquire the 24-Bits in a 1ms timed loop. To measure performance we wrote a test program. In that, we only triggered the hardware and transfered the data to the realtime controller. The task which is doing this job, has a approx. CPU-Load of 30%, which is, in my humble opinion, very high. The task is not waiting for data or anything else! We have earlier implemented a control which is also using a 1ms timed loop. This control is sampling 2 analog input signals, 2 counters. Futhermore it's sending telegrams with CAN and doing many calculations. The strange thing is, this much huger program has a CPU-Load of 25%. Does anybody know where the problem is?
For the better understandig I attached our test-program to this text.
We're using:
PXI-8175 realtime controler
PXI-6221 Multifunction DAQ
Thanks!
Regards,
Crest!
Attachments:
dig_test.zip ‏51 KB

Hello,
First of all 30% CPU-Load is normal because the DAQmx-driver needs a lot of resources.
In your programm you should place a wait (for example with 1ms) into the while-loop which causes
lower CPU-Load.
If this is not enough you should build your vi like in the following example.
Regards,
Christian
Attachments:
Read Dig Port.vi ‏51 KB

Xbox 360 - Optical line-in pass through 5.1 to optical line-out on an iMac?

Hi guys, i'm in the market to purchase a new 5.1 surround sound system for my room and the following issue has been purplexing me.
IS it possible to daisy chain my XBOX 360 to my iMac with optical cables and pass through 5.1 surround sound to the decoder on the sound system?
So i'd have an optical cable from my xbox to the line-in on my iMac. I'd use Rogue Amoeba's Line-In app to pass the sound through to the optical line-out and through to the sound system.
(I know it works using stereo sources, but i don't know about 5.1 digital sound.)
I also know i could just connect them both to separate optical ports on the sound sytem, but i'm trying to listen to 2 sources at the same time. (5.1 from XBOX and music from iMac).
Any thoughts on this are appreciated!

I'm convinced things work like this:
The SBX-Fi receives the encoded SPDIF.<
The drivers decode it into the 5 digital audio signals. This siimply regenerates what was put into the encoding and has no effect on its "volume."<
The 5 digital audio signals are sent to the SBX-Fi hardware, as is.<
The signals are widened (not sure about the SBX-Fi, but for SBLi've-/SBAudigy-series card it's 32-bits with IIRC 4 bits for headroom, which is 24dB) at input by the SBX-Fi hardware. The additional headroom is probably able to handle most effects/mixing which might happen, but might produce a signal which would clip on output if the intermediate results produce a digital volume over 00%.<
The master output volume operates on the output signals before they are narrowed.<
The output signals are narrowed (dithered) and distributed.<
If that's correct, it means you should be able to simply lower the master output volume in the soundcard mixer; and that presumes something's going on like high Crystalizer settings, or something; to elminate clipping distortion.
-Dave
?[email protected]

Sony BDV-E570 - Cannot get sound from TV to Sony system using Digital Optical Cord

I get beautiful audio out of this system in FM Tuner, BD/DVD, and Internet Radio - no buzz whatsoever. However... the only way that I can get ANY audio from the TV or Cable box to come out of the Sony system is with RCA cables (the old style Red / White). This produces a horrible buzz but at least the TV sound comes out. The manual gives three different options for streaming TV audio through your Home Theater System. I purchased an 8' Rocketfish digital optical cable at Best Buy. It doesn't work at all! No audio at all. It fits, but doesn't quite want to "stay in"; is this normal???
I have the Sony BDV-E570 system, Vizio 46" TV (purchased 6 months ago) and a Comcast Digital HD cable box. All three have the same optical outlet and this cable doesn't "stay" in any of them. Does this sound like an Optical Cord issue? I really don't want to take this system down and lug it back to the store.
Thanks for any help!
Troy
Solved!
Go to Solution.

An optic cable should be able to fix the buzzing sound. If for some reason it isnt staying in the back of the system, then there could possibly be a falty connection in terms of the optic cable input or connector. Otherwise, as long as you have the audio cable hooked up, no matter which route you choose to connect them, and have your tv's audio set to external speakers you should be all set. If this continues to not work, I'd try calling either Geek Squad/Home Theater specialist or call Sony's technical line and see if they have any other suggestions. I myself am a Best Buy Home Theater specialist and this is my initial reaction to the issue at hand.

I cannot hear any songs or movies from my laptop speakers - the headphone port works and a red light is showing? The output sound settings are showing as digital optical only? Any ideas :)

I cannot hear any songs or movies from my laptop speakers - the headphone port works and a red light is showing from the port? The output sound settings are showing as digital optical only? I used the headphones in the laptop for the first time yesterday and have had this problem ever since. Any ideas

The internal switch in the audio output port is stuck. Try inserting the earphone plug a few times. If no success, try jiggling a tooth pick inside in order to trip the switch.. If still no success, have the technicians at the Apple store genius bar do it for you.
Ciao.

Which is better for AUDIO: HDMI or the Digital Optical Fiber Optic Toslink Audio Cable?

Is there a difference in Audio performance between your standard HDMI hook up (for my Blue Ray Player) or adding the Digital Optical Fiber Optic Toslink Audio Cable. Which will sound better????
Please help...
Thank you for your time!!!

Well that is huge debate here. My opinion is HDMI cables are WAY over priced for what they are. Do not be lead to believe you have to have a 100 dollar hdmi cable, I think 50 is crazy high myself. My only concern is getting one so cheap that it might have poor connections or not last. Also if you run it in a wall it has to be rated for that.
I have a Rocketfish cable and it works fine. My guess would be the dynex cables are fine too. And if your not buying it from Best Buy there are other options as well.
Something else to keep in mind as well. If you only have one HDMI device and you hook it up to your reciever using HDMI you will need two cables for one device. The one that runs to the Reciever and then the one from the reciever to the tv. If you use an Optical cable you only need the one HDMI cable. Run the HDMI cable from the blu ray to the tv, and the optical line from the player to the reciever. This will give you 5.1 dolby or dts through the reciever and also sound through the tv since HDMI carries sound as well as video.
But if money (for cables) was not an issue the HDMI cable supposedly can offer the best sound quality of the two.

Does the digital optical input recognise Dolby Digital?

Hey guys,
I was wondering if you could help clarify something for me. I have an Astro Gaming A30 Audio System that I use when playing my PS3. It's a gaming headset with pinpoint-accurate 7.1 Dolby and Dolby Headphone surround sound. Here's a link to the web page if you want to know more about it - http://www.astrogaming.com/products/detail/80/A30-Audio-System/.
Now, at the moment I have the PS3 connected directly to the A30 Audio System with a digital optical cable. In the PS3 settings, I have it set to output Dolby Digital 5.1 as this is the format that the A30 Audio System uses. This setting is important because it's what gives me the surround sound in my headphones. Ok, we're almost at my question...
Recently, I've been thinking of buying a capture card so I can record my game plays and upload them to YouTube. The capture card that I'm thinking of getting is the Blackmagic Design Intensity Pro. Here's a link to the web page - http://www.blackmagic-design.com/products/intensity/.
My question is - since there is no output on the A30 Audio System, and therefore no way to route the sound into my Mac from it, I need to first send the sound from the PS3 into the Mac (for recording) and then re-send the sound from the Mac into the Astro A30s (for listening). If I do this, will I lose the Dolby Digital format that was originally output from the PS3? I don't mind recording the audio in stereo, but it's essential that the Dolby Digital sound goes to the Astro A30s. Otherwise I won't have proper surround sound. And if you went to the website, you would have noticed that they're pretty expensive. So playing in surround sound is very important to me, as I paid top dollar for them.
Anyway, if you can clarify that for me it would be much appreciated. Thanks for your time.
Regards,
Daniel

Sure there's a difference it depends completely on the original sample rate of the audio recorded otherwise the best built in audio can do is 48/24, so trying to go out at 96 will force resampling[without a capable app running]. But in terms of resampling, if you use the card then you should be able to use 96/32.
Have you properly adjusted AMS settings; so that the card is in Properties at 96? Still the only governing factor there is whatever software governs the PCI card. I don't get the problem you're having here, what is the connection to the machine, optical?

After 10.9.3 upgrade no sound on digital/optical port

Hello All,
I have a problem with my Mini (Early 2009, 2GHz Core2Duo). After recent Mavericks upgrade to 10.9.3, sound through digital optical output port dissapeared.
1. I checked receiver's input, works with other devices on the same cable.
2. Cable output light is red (as always, seem Mac Mini transmitter works???)
3. Mavericks says that optical wire is connected to the port, in sound preferences there is digital/optical output available.
4. Speaker icon on Top Bar is greyed out and volume slider unavailable to adjust.
5. PRAM/NVRAM reset didn't help.
6. Receiver doesn't recognise signal because input led says Analog, normally Digital should be there.
Maybe this is a bug?
Please help.
Regards,
Kamil

Hey Guys,
After recent SMC+EFI update on Macbook Air (Mid 2013) OSX v10.9.3, my internal audio device disappeared,
I tried everything I could find in google with no luck. (NPRAM+SMC reset, reloading kents etc.)
THIS IS WHAT SOLVED THE PROBLEM FOR ME:
1. I opened /System/Library/Extensions folder, there I found besides the usual AppleHDA.kext, also an AppleHDA.kext.disabled one.
2. I switched between them (swapped their names, sometimes you'll have to do it from the "get info" menu to take effect)
-- if you don't have this AppleHDA.kext.disabled one, try searching for one lil older than yours in the internet
3. then I unloaded and reloaded the kent dir again-
sudo kextunload /System/Library/Extensions/AppleHDA.kext
sudo kextload /System/Library/Extensions/AppleHDA.kext
And voila!
Hope it helps someone, as I spent hours until getting this to work again

X-Fi support digital OPTICAL SPDIF outp

From what I've been able to tell so far is that the only way to get the optical output is to spend a lot of money on the platinum version of the X-Fi. Am I wrong or is Creative being creative in manipulating their sales and their bottom line?
Thank you.
ATTN Creative: We the consumers need an affordable X-Fi card with digital OPTICAL output without the front 5 /4 bay or the external platinum device! Space inside my PC is precious as I have a multimedia type microatx box. Get your engineers working on a solution!

I have nothing against the coaxial method, I just have mostly optical inputs in my yamaha reciever with the exeption of one thats coaxial but I believe my x-box is using that right now. Anyhow I looked all over the net for the digital kit and could not find one. I just have to ask what does creative have against them? To me it seems like their trying to skew the market towards their $400 dollar package. I don't know about you...

My Mac Pro doesn't have an option to send sound to Digital Optical.

Hello
I've recently had a problem with my Mac Pro where the sound options tab does not display an option to my digital optical audio port. I didn't notice it until I got a headset that needed that port. I figured it was probably the headsets fault, since it wasn't being very cooperative with the computer in the first place. But when I got a new headset that was made for PC and Mac, I found that the option was still not there. I've looked around, and haven't really found a similar problem or solution.
I am running an early Mac Pro 2008 dual Quad Core @ 2.23GHz. I have 14GB of Ram installed, and run an ATI 5870.
Also, I have tested the headset on the Windows side of my computer, and that side IS picking up the digital optical output, so I know that it is working, just not with the Mac OS.
If you guys can help, I'd be greatful.
Thanks,
NetBlitzer

okay, it could be one of a few things-first, fire up Audio MIDI setup and see if that helps, secondly, there might be something stuck in the headphone jack in the on positin- maybe wiggling around in there with a plastic pen might fix it
just a thought
J.B

Beginning of audio cut off when using digital optical out

Hi all,
This is my first post here since switching to Mac earlier this year.
I'm having problems with the first second or so of audio being cut off when commencing playback using the Mac's digital optical out. This happens with any source of audio in a variety of different applications (e.g. video, iTunes, even system sounds for notifications and the like). I have used a mini Toslink to Toslink optical cable to connect from the Mac's audio out jack to the receiver of my digital speakers (Logitech Z906). Once playback has commenced, audio plays fine; it's just the very first second or so which is usually clipped.
The problem does NOT happen when using the built-in speakers. I've also noticed that if I unplug the cable from the receiver end (leaving it connected at the Mac end) I can see the red LED light shining the optical signal down the cable, but this goes out exactly 30 seconds after audio stops playing. If I start another audio playback within 30 seconds, there is no loss of audio at the beginning, but if I wait longer than 30 seconds (i.e. after the LED has gone out) I encounter the problems with the initial audio being clipped. I therefore suspect that this is an OS issue which is shutting down the digital optical out when audio is not actually playing (presumably to save power or something). I wouldn't have a problem with this if it actually worked properly when audio playback recommences, but it seems that there is a slight delay whilst the optical out service 'wakes up' again and this is leading to the clipped audio.
I've done some searching of the internet (and these support communities) for this problem and there seems to be little information about it. It does seem to affect a few other people though and some have resorted to third party applications or scripts which play silent audio at regular intervals to keep the optical output running permanently (e.g. SoundStay (https://www.macupdate.com/app/mac/39833/soundstay) - no longer maintained and the download link is dead). However, these amount to a kludge at best which treat the symptoms rather than the underlying cause, which I would rather resolve.
I tried to log a support case with Apple in order to have them call me, only to have the system tell me that my support has already expired, despite having purchased the Mac only 4 months ago. It seems that my Apple One-Year Limited Warranty is actually only 90 days when it comes to telephone support. So here I am!
Does anyone else have this problem with optical out, and how can I resolve this? Any help would be gratefully appreciated.
Thank you.

Hello kcore66,
Would it be possible for you to upload one of the files in
question so that I can take a look. In Captivate 1.01 there is an
intermittent problem where sometimes the audio is either cut off or
just doesn't play when you publish / preview. To get around this
simply moving the audio object back and forth along the timeline
and then positioning it back in it's original position works 9
times out of 10.
HTH
Regards,
Mark

Can't send fax on my digital voice line

Ever since they fixed the problem with slow uploads on the internet side, I'm unable to reliably send a multipage fax on my digital voice line....using an HP fax machine that has always worked.
I threw a fax modem on it, and it can't send either.
Do you/they have to provision something? Tech support is useless

Thanks for reaching out to the community MerrickJoe.
You mentioned multipage faxes specififcally. Just want to verify then that you are able to send page faxes? Are you able to receive faxes without issue? When you encounter the failure, do you see any error messages displayed?
Thanks
~FCN

Digital(optical) Line in Problem

Similar Messages

Maybe you are looking for